3122123312131 has 4 divisors (see below), whose sum is σ = 3124740348792. Its totient is φ = 3119506275472.

The previous prime is 3122123312111. The next prime is 3122123312201. The reversal of 3122123312131 is 1312133212213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3122123312131 is a prime.

It is a super-2 number, since 2×3122123312131² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3122123312096 and 3122123312105.

It is not an unprimeable number, because it can be changed into a prime (3122123312111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1308516541 + ... + 1308518926.

It is an arithmetic number, because the mean of its divisors is an integer number (781185087198).

Almost surely, 2^{3122123312131} is an apocalyptic number.

3122123312131 is a deficient number, since it is larger than the sum of its proper divisors (2617036661).

3122123312131 is a wasteful number, since it uses less digits than its factorization.

3122123312131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2617036660.

The product of its digits is 1296, while the sum is 25.

Adding to 3122123312131 its reverse (1312133212213), we get a palindrome (4434256524344).

The spelling of 3122123312131 in words is "three trillion, one hundred twenty-two billion, one hundred twenty-three million, three hundred twelve thousand, one hundred thirty-one".